Identifying sturgeon spawning locations through back-calculations of drift

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Unfavorable spawning habitat conditions have been identified as a potential limiting factor for recovery of the endangered pallid sturgeon on the Missouri River and its tributaries. After successful spawning, incubation, and hatching, sturgeon free embryos passively drift downstream and are sometimes captured by sampling crews. While spawning habitat has been identified at time of spawning through field investigations, captured pallid and shovelnose (used as a surrogate species) sturgeon free embryos in the Missouri River often do not come from genetically-known telemetered fish and may be useful to identify additional areas of spawning habitat. We developed a routing model to identify potential spawning locations for captured free embryos of known age based on channel velocity estimates. To estimate velocity we compared use of at-a-station hydraulic geometry relations to empirical estimates of velocity form a 15-year archive of hydroacoustic measurements on the Missouri River.

Publication type Book chapter
Publication Subtype Book Chapter
Title Identifying sturgeon spawning locations through back-calculations of drift
ISBN 978-1-138-02913-2
Year Published 2016
Language English
Publisher Taylor & Francis Group
Publisher location London
Contributing office(s) Columbia Environmental Research Center
Description 9 p.
Larger Work Type Book
Larger Work Subtype Monograph
Larger Work Title River Flow 2016
First page 2188
Last page 2196
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